Folding box



FIG. 1 is a front perspective view of a folding box embodying my new design;

FIG. 2 is a front side elevation view thereof;

FIG. 3 is a rear side elevation view thereof;

FIG. 4 is a right side elevation view thereof;

FIG. 5 is a left side elevation view thereof;

FIG. 6 is a top plan view thereof;

FIG. 7 is a bottom plan view thereof; and,

FIG. 8 is a top plan view of the folding box in an unfolded state. 

CLAIM The ornamental design for a folding box, as shown and described. 